US11545098B2 - Driving apparatus for display panel having selection circuit for outputting a plurality of driving voltages - Google Patents
Driving apparatus for display panel having selection circuit for outputting a plurality of driving voltages Download PDFInfo
- Publication number
- US11545098B2 US11545098B2 US17/601,440 US202017601440A US11545098B2 US 11545098 B2 US11545098 B2 US 11545098B2 US 202017601440 A US202017601440 A US 202017601440A US 11545098 B2 US11545098 B2 US 11545098B2
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- US
- United States
- Prior art keywords
- display panel
- driving
- driving voltages
- selection circuits
- voltages
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3696—Generation of voltages supplied to electrode drivers
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2310/00—Command of the display device
- G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
- G09G2310/0264—Details of driving circuits
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2310/00—Command of the display device
- G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
- G09G2310/0264—Details of driving circuits
- G09G2310/0297—Special arrangements with multiplexing or demultiplexing of display data in the drivers for data electrodes, in a pre-processing circuitry delivering display data to said drivers or in the matrix panel, e.g. multiplexing plural data signals to one D/A converter or demultiplexing the D/A converter output to multiple columns
Definitions
- This disclosure relates to a driving apparatus, and in particular to a driving apparatus for a display panel.
- a Tape Carrier Package TCP
- COG Chip-on-Glass
- COF Chip-on-Film
- FIG. 1 is a schematic diagram of a related art display panel and a COF package substrate.
- a control chip IC 1 may provide multiple control voltages V 1 to V 4 to a display panel DP 1 .
- a trace layout on a film F 1 may be relatively simple when signal types of the control voltages V 1 to V 4 are the same (for example, a high voltage level and a low voltage level are the same), thus, traces on the film F 1 do not have to cross over each other.
- This disclosure provides a driving apparatus for a display panel, which can effectively prevent having to design a trace layout of a Chip-on-Film (COF) package substrate through addition of a jumper wire.
- COF Chip-on-Film
- the driving apparatus for the display panel of the disclosure is configured on a film by means of a COF package, and the driving apparatus for the display panel includes at least one selection circuit and a control circuit.
- the selection circuits respectively receive multiple driving voltages.
- the control circuit is coupled to the selection circuits, and controls each of the selection circuits to output one of the multiple driving voltages, so as to drive the display panel.
- the selection circuits of the embodiment of the disclosure may receive the multiple driving voltages, and be controlled by the control circuit to output one of the multiple driving voltages, so as to drive the display panel.
- This enables the traces on the COF package substrate to transmit the driving voltages with the different voltage levels, without having to provide the driving voltages with the different voltage levels through addition of a jumper wire.
- FIG. 1 is a schematic diagram of a display panel and a Chip-on-Film (COF) package substrate of the related art.
- COF Chip-on-Film
- FIG. 2 is a schematic diagram of a display panel, a Chip-on-Film (COF) package substrate, and a printed circuit board of the related art.
- COF Chip-on-Film
- FIG. 3 is a schematic diagram of a driving apparatus for a display panel according to an embodiment of the disclosure.
- FIG. 4 is a schematic diagram of a driving apparatus for a display panel according to another embodiment of the disclosure.
- FIG. 5 is a schematic diagram of a driving apparatus for a display panel according to another embodiment of the disclosure.
- FIG. 3 is a schematic diagram of a driving apparatus for a display panel according to an embodiment of the disclosure.
- a driving apparatus 100 for a display panel is configured on a film 102 by means of a Chip-on-Film (COF) package.
- the driving apparatus 100 for the display panel includes selection circuits D 1 to DM and a control circuit 104 , where M is a positive integer.
- the control circuit 104 is coupled to the selection circuits D 1 to DM, and the selection circuits D 1 to DM are coupled to the display panel 106 through COF conducting wires on the film 102 .
- Each of the selection circuits D 1 to DM may receive multiple driving voltages V 1 to VN, where N is a positive integer, and each of the driving voltages V 1 to VN may have a different voltage value.
- the control circuit 104 may respectively control each of the selection circuits D 1 to DM to output one of the driving voltages V 1 to VN to a corresponding COF conducting wire, so as to drive the display panel 106 to display an image screen.
- the selection circuits D 1 to DM may be, for example, gate driving circuits, in which the driving voltages outputted by the selection circuits are configured to drive corresponding gate scan lines.
- control circuit 104 controls the selection circuits D 1 to DM to output one of multiple driving voltages to drive the display panel 106 , this enables the COF conducting wires on the COF package substrate to transmit the driving voltages with different voltage levels, without having to provide the driving voltages with the different voltage levels through addition of a jumper wire. Therefore, the manufacturing cost can be effectively reduced, and noise interference in the driving voltages due to the traces being excessively long can be prevented, thereby preventing affecting display quality of the display panel 106 .
- FIG. 4 is a schematic diagram of a driving apparatus for a display panel according to another embodiment of the disclosure.
- each of the selection circuits D 1 to DM is implemented as a multiplexer.
- the number of multiplexers that is, the number of the selection circuits
- FIG. 4 is a schematic diagram of a driving apparatus for a display panel according to another embodiment of the disclosure.
- an input terminal of the multiplexer 202 may receive the multiple driving voltages V 1 to VN, a control terminal of the multiplexer 202 is coupled to the control circuit 104 , and an output terminal of the multiplexer 202 is coupled to the display panel 106 through the corresponding COF conducting wire.
- the control circuit 104 may control the multiplexer 202 to output one of the driving voltages V 1 to VN to the display panel 106 , so as to drive the display panel 106 to display an image screen.
- FIG. 5 is a schematic diagram of a driving apparatus for a display panel according to another embodiment of the disclosure.
- each of the selection circuits D 1 to DM may include multiple switches (to keep the diagram concise, only implementation architecture of a selection circuit is shown and the film 102 is omitted in FIG. 5 ).
- Each of the switches may be implemented by transistors M 1 to M 6 , but is not limited thereto.
- Gates of transistors M 1 to M 6 are coupled to the control circuit 104 , the transistors M 1 and M 4 are connected in series between a voltage VCH and a voltage VCL, the transistors M 2 and M 5 are connected in series between a voltage VBH and a voltage VBL, and the transistors M 3 and M 6 are connected in series between a voltage VAH and a voltage VAL.
- a common contact point of the transistors M 1 and M 4 , a common contact point of the transistors M 2 and M 5 , and a common contact point of the transistors M 3 and M 6 are connected to the display panel 106 through a same COF conducting wire.
- the control circuit 104 may control a turned-on state of the transistors M 1 to M 6 , and select one of the voltages VAH, VAL, VBH, VBL, VCH, and VCL to be outputted to the display panel 106 , so as to drive the display panel 106 to display an image screen.
- the number of transistors included in the selection circuits is not limited by this embodiment.
- the number of transistors included in the selection circuits may be greater according to actual application, therefore the selection circuits may provide a greater variety of driving voltages to drive the display panel.
- the selection circuits may receive the multiple driving voltages, and be controlled by the control circuit to output one of multiple driving voltages, so as to drive the display panel.
- This enables the traces on the COF package substrate to transmit the driving voltages with the different voltage levels without having to provide the driving voltages with the different voltage levels through addition of a jumper wire. Therefore, the manufacturing cost can be effectively reduced, and noise interference in the driving voltages due to the traces being excessively long can be prevented, thereby preventing affecting display quality of the display panel 106 .
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal Display Device Control (AREA)
Abstract
Description
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US17/601,440 US11545098B2 (en) | 2019-05-03 | 2020-03-06 | Driving apparatus for display panel having selection circuit for outputting a plurality of driving voltages |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201962842536P | 2019-05-03 | 2019-05-03 | |
US201962850562P | 2019-05-21 | 2019-05-21 | |
PCT/CN2020/078091 WO2020224318A1 (en) | 2019-05-03 | 2020-03-06 | Driving apparatus for display panel |
US17/601,440 US11545098B2 (en) | 2019-05-03 | 2020-03-06 | Driving apparatus for display panel having selection circuit for outputting a plurality of driving voltages |
Publications (2)
Publication Number | Publication Date |
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US20220165226A1 US20220165226A1 (en) | 2022-05-26 |
US11545098B2 true US11545098B2 (en) | 2023-01-03 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US17/601,440 Active US11545098B2 (en) | 2019-05-03 | 2020-03-06 | Driving apparatus for display panel having selection circuit for outputting a plurality of driving voltages |
Country Status (4)
Country | Link |
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US (1) | US11545098B2 (en) |
CN (2) | CN111192551A (en) |
TW (1) | TWM602715U (en) |
WO (1) | WO2020224318A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2020224318A1 (en) * | 2019-05-03 | 2020-11-12 | 神盾股份有限公司 | Driving apparatus for display panel |
Citations (17)
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US5670973A (en) * | 1993-04-05 | 1997-09-23 | Cirrus Logic, Inc. | Method and apparatus for compensating crosstalk in liquid crystal displays |
CN1499474A (en) | 2002-11-08 | 2004-05-26 | 富士通株式会社 | Method for driving display and drive circuit for this display |
CN1804708A (en) | 2006-01-16 | 2006-07-19 | 友达光电股份有限公司 | Display device and its pixel test method |
US20140036216A1 (en) | 2000-07-25 | 2014-02-06 | Panasonic Liquid Crystal Display Co., Ltd. | Liquid crystal display device |
CN103903557A (en) | 2012-12-24 | 2014-07-02 | 乐金显示有限公司 | Display device including driving unit |
CN103915416A (en) | 2013-01-08 | 2014-07-09 | 联咏科技股份有限公司 | Electronic device with chip-on-film packaging |
CN104038206A (en) | 2013-03-05 | 2014-09-10 | 三星电子株式会社 | Output buffer circuit and source driving circuit including the same |
CN104332147A (en) | 2014-11-14 | 2015-02-04 | 深圳市华星光电技术有限公司 | Grid drive unit circuit, array substrate and display device |
CN106023928A (en) | 2016-07-19 | 2016-10-12 | 深圳市华星光电技术有限公司 | Source electrode driving module and liquid crystal display apparatus |
TWI569080B (en) | 2015-10-23 | 2017-02-01 | 瑞鼎科技股份有限公司 | Driving circuit applied to lcd apparatus |
US20170076694A1 (en) | 2015-09-15 | 2017-03-16 | Samsung Display Co., Ltd. | Driver integrated circuit (ic) chip and display device having the same |
CN107103889A (en) | 2017-06-29 | 2017-08-29 | 惠科股份有限公司 | Driving circuit of display panel, driving method of driving circuit and display device |
US9773450B2 (en) | 2012-10-17 | 2017-09-26 | Joled Inc. | EL display panel with gate driver circuits mounted on flexible board including terminal connection lines connecting connection parts and control terminals |
US20180307357A1 (en) * | 2017-04-20 | 2018-10-25 | Lg Display Co., Ltd. | Touch display device and method of driving the same |
CN109166552A (en) | 2018-10-17 | 2019-01-08 | 深圳市华星光电半导体显示技术有限公司 | Liquid crystal display panel and its driving circuit |
CN109697962A (en) | 2017-10-20 | 2019-04-30 | 南昌欧菲多媒体新技术有限公司 | A kind of multiplexer circuit |
CN211376151U (en) | 2019-05-03 | 2020-08-28 | 神盾股份有限公司 | Display panel driving device |
-
2020
- 2020-03-06 WO PCT/CN2020/078091 patent/WO2020224318A1/en active Application Filing
- 2020-03-06 CN CN202010150053.7A patent/CN111192551A/en active Pending
- 2020-03-06 CN CN202020264211.7U patent/CN211376151U/en active Active
- 2020-03-06 US US17/601,440 patent/US11545098B2/en active Active
- 2020-03-06 TW TW109202482U patent/TWM602715U/en unknown
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US5670973A (en) * | 1993-04-05 | 1997-09-23 | Cirrus Logic, Inc. | Method and apparatus for compensating crosstalk in liquid crystal displays |
US20140036216A1 (en) | 2000-07-25 | 2014-02-06 | Panasonic Liquid Crystal Display Co., Ltd. | Liquid crystal display device |
CN1499474A (en) | 2002-11-08 | 2004-05-26 | 富士通株式会社 | Method for driving display and drive circuit for this display |
CN1804708A (en) | 2006-01-16 | 2006-07-19 | 友达光电股份有限公司 | Display device and its pixel test method |
US9773450B2 (en) | 2012-10-17 | 2017-09-26 | Joled Inc. | EL display panel with gate driver circuits mounted on flexible board including terminal connection lines connecting connection parts and control terminals |
CN103903557A (en) | 2012-12-24 | 2014-07-02 | 乐金显示有限公司 | Display device including driving unit |
CN103915416A (en) | 2013-01-08 | 2014-07-09 | 联咏科技股份有限公司 | Electronic device with chip-on-film packaging |
CN104038206A (en) | 2013-03-05 | 2014-09-10 | 三星电子株式会社 | Output buffer circuit and source driving circuit including the same |
WO2016074297A1 (en) | 2014-11-14 | 2016-05-19 | 深圳市华星光电技术有限公司 | Gate driving unit circuit, array substrate and display device |
CN104332147A (en) | 2014-11-14 | 2015-02-04 | 深圳市华星光电技术有限公司 | Grid drive unit circuit, array substrate and display device |
US20170076694A1 (en) | 2015-09-15 | 2017-03-16 | Samsung Display Co., Ltd. | Driver integrated circuit (ic) chip and display device having the same |
TWI569080B (en) | 2015-10-23 | 2017-02-01 | 瑞鼎科技股份有限公司 | Driving circuit applied to lcd apparatus |
CN106023928A (en) | 2016-07-19 | 2016-10-12 | 深圳市华星光电技术有限公司 | Source electrode driving module and liquid crystal display apparatus |
US20180307357A1 (en) * | 2017-04-20 | 2018-10-25 | Lg Display Co., Ltd. | Touch display device and method of driving the same |
CN107103889A (en) | 2017-06-29 | 2017-08-29 | 惠科股份有限公司 | Driving circuit of display panel, driving method of driving circuit and display device |
CN109697962A (en) | 2017-10-20 | 2019-04-30 | 南昌欧菲多媒体新技术有限公司 | A kind of multiplexer circuit |
CN109166552A (en) | 2018-10-17 | 2019-01-08 | 深圳市华星光电半导体显示技术有限公司 | Liquid crystal display panel and its driving circuit |
CN211376151U (en) | 2019-05-03 | 2020-08-28 | 神盾股份有限公司 | Display panel driving device |
Non-Patent Citations (2)
Title |
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"International Search Report (Form PCT/ISA/210) of PCT/CN2020/078091", dated May 27, 2020, with English translation thereof, pp. 1-4. |
"Office Action of China Counterpart Application", dated Nov. 2, 2022, p. 1-p. 8. |
Also Published As
Publication number | Publication date |
---|---|
US20220165226A1 (en) | 2022-05-26 |
WO2020224318A1 (en) | 2020-11-12 |
CN111192551A (en) | 2020-05-22 |
TWM602715U (en) | 2020-10-11 |
CN211376151U (en) | 2020-08-28 |
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